PowerfingersFinger Strengthener - Exerciser by PowerFingers

I bought these to help with strengthening my muscles in my hand. They are quite a good tension releaser for the muscles. I quite enjoy using them, they now form part of my collection of foam rolling amd massage ball exercises.

Falls apart quickly

This product is currently the best I have found. Not only does it help improve overall forearm balance, it has reduced the niggling tendon pain in my arm. Would recommend this to all my friends.

I am a rock climber, and for a while I was struggling with a series of hand injuries and also my hand-strength had plateaued. By using these little beauties to strengthen the antagonists in my hand, not only have I rehabilitated and avoided more injuries, but my hand-strength is also steadily improving too. Well recommended!

These are a great invention, but unfortunately the rubber started to fail after I'd only had them a few weeks. If they can't take 'normal use' then the manufacturer is getting something a bit wrong here